Wappalyzer is a user-friendly Mozilla Firefox add-on that reveals the technologies behind any website. Once installed, it displays small icons in the lower right corner of your browser. Simply hover over these icons to discover if a site is using Google Analytics, jQuery, WordPress, Quantcast, and more. Ideal for programmers and website administrators, Wappalyzer helps you understand the tools and platforms powering each website. Enhance your web development and analysis skills with this straightforward and efficient tool.
I’m kinda torn on Wappalyzer. It's helpful for surfacing web technologies, but it sometimes lacks detail on lesser-known tools. I want to love it but need more consistency.